Forward Error Correction Concealment Method for CELP-Based Coders in Packet Networks
نویسنده
چکیده
This paper presents a concealment method based on forward error correction (FEC) to improve speech quality deterioration caused by packet losses for CELP based coders. We applied our scheme to the standard ITU-T G729 standard speech coder to evaluate the proposed method. The perceptual evaluation of speech quality (PESQ) and enhanced modified bark spectral distortion (EMBSD) tests under various packet loss conditions confirm that the proposed algorithm is superior to the concealment algorithm embedded in the G729. The performance measures prove that the concealment method based FEC is better at the expense of extra delay.
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